How the Chambered nautilus Lives

Question 1 · multiple choice

Which documentary location is most likely to feature a wild Chambered nautilus?

flower-rich woodland edges, gardens, and meadows deep tropical reef slopes, rising shallower at night humid lowland rain forest and leaf litter tropical vegetation and cultivated foliage

Question 2 · multiple choice

Which natural buffet would be most useful to a Chambered nautilus?

grasses, sedges, roots, and bark small fish and aquatic insects crustaceans, carrion, and small animals found by smell fish, birds, mammals, reptiles, and carrion

Question 3 · multiple choice

A researcher checks a Chambered nautilus's movement log. Which pattern is most believable?

forages by day or night and migrates over long distances hunts mainly by day near the water surface often feeds continuously, with timing varying by species usually rises at night and retreats deeper by day

Question 4 · multiple choice

A footprint-and-motion survey follows a Chambered nautilus. Which result is most likely?

moves by jetting water from a funnel flies through water using broad front flippers swims below branches and makes precise surface approaches crawls using tube feet and body-wall contractions

Question 5 · multiple choice

Which adaptation would be most useful to a Chambered nautilus in its normal environment?

enhanced smell, hearing, and electrical sensitivity compensate for reduced eyes gas and liquid in shell chambers regulate buoyancy club-like appendages accelerate rapidly and crack shells with impact and cavitation powerful claws open hard foods while modified gills breathe moist air

Question 6 · multiple choice

Which reproductive strategy is used by a Chambered nautilus?

alternates between a tiny attached polyp and a free-swimming medusa the female guards eggs inside a silken retreat lays a small number of large eggs that develop slowly cubs develop inside a tree hollow or sheltered den

Question 7 · multiple choice

What would a behavioural scientist most likely report about a Chambered nautilus?

pairs maintain long bonds and reunite with ritualised dances mostly solitary and strongly territorial may gather at cleaning stations and rich feeding sites mostly solitary but may gather around food

Question 8 · multiple choice

Why might conservationists monitor a Chambered nautilus as part of a whole ecosystem?

scavenges dead material and preys on small reef animals aerates soil and creates shelter used by other animals moves energy from aquatic prey to riverbank ecosystems top predator linking freshwater, estuary, and marine food webs

Question 9 · multiple choice

Which reaction would be natural for a threatened Chambered nautilus?

uses agility, chases, and sharp bill displays withdraws into its shell and seals the opening with a tough hood bright warning colours discourage predators from tasting it freezes, sways, drops, and can regrow a lost leg while young

Question 10 · true false

True or False: A chambered nautilus four horseshoe-shaped structures visible through the bell are reproductive organs.

True False